Buses replace late night trains in the Carmarthen / Swansea area from Monday 12 to Friday 16 January
Engineering work details
Starts Monday 12 January 2026 to Friday 16 January 2026
Train operators affected
Route(s) affected
Transport for Wales between Carmarthen and Swansea / Llandovery / Cardiff Central, and between Fishguard Harbour and Cardiff Central
Description
Engineering work is taking place between Carmarthen and Llanelli, closing various lines overnight.
As a result:
Monday to Thursday:
The 21:46 Fishguard Harbour to Cardiff Central service will be diverted, and will not call at stations via Swansea. A replacement bus will run from Llanelli to Port Talbot Parkway, calling at stations via Swansea
The 23:20 Cardiff Central to Carmarthen service will terminate at Llanelli. A replacement bus will run from Llanelli to Carmarthen
The 23:48 Swansea to Carmarthen service will be replaced by a bus throughout
Tuesday to Friday:
The 04:38 Carmarthen to Swansea will be replaced by a bus throughout
The 05:13 Swansea to Llandovery service will start from Llanelli at 05:29, an earlier replacement bus will run from Swansea to Llanelli, connecting with the train
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Replacement bus travel advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.
You can find the pick-up and set-down location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.
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